pgarrett/openssl-alpine repository overview

⁠OpenSSL Alpine

Docker image based on Alpine Linux that uses OpenSSL to generate a three tier x509 certificate chain.

x509 is a standard for a public key infrastructure (PKI) to manage digital certificates, public-key encryption and a key part of the Transport Layer Security (TLS) protocol used to secure web and email communication.

⁠Customisation

The image comes with default values, but they can be overridden using the following environment variables when running a docker container to customise the generated certificates:

For example, to run a container, customise variables and mount the certificates in a volume:

docker run --rm \
  -e COUNTY="ME" \
  -e STATE="Middle Earth" \
  -e LOCATION="The Shire" \
  -e ORGANISATION="Hobbit" \
  -e ISSUER_CN="J R R Tolkien" \
  -e PUBLIC_CN="hobbit.com" \
  -e ISSUER_NAME="tolkien" \
  -e PUBLIC_NAME="hobbit" \
  -v hobbit:/etc/ssl/certs \
  pgarrett/openssl-alpine

List the generated certificates:

ls -la /var/lib/docker/volumes/hobbit/_data

View the public certificate details:

openssl x509 -in /var/lib/docker/volumes/hobbit/_data/hobbit.crt -text -noout